The reservoir water level rise and fall caused the damage of reservoir shore.The main deformation and failure mode is manifested in two aspects,one is induced by a large number of collapses and landslides,the other is caused by bank collapse. The seepage field distribution law of slope in Linyi reservoir is studied in this paper. Three kinds of limit equilibrium method are used to calculate the safety factor of slope.The influence of the rising of water level on the slope stability is analyzed in this way. This paper solved the problem of the safety performance of the slope using the specific numbers of feedback.